KR100882923B1 - 기계가공성을 갖는 Cr₂AlC 소결체의 저가 제조방법 - Google Patents
기계가공성을 갖는 Cr₂AlC 소결체의 저가 제조방법 Download PDFInfo
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Abstract
Description
Claims (8)
- Cr2O3 분말과 탄소원 원료분말의 혼합분말을 불활성 분위기 또는 진공분위기 및 1000∼1500 ℃ 온도 조건에서 30분∼10시간 동안 환원 반응시켜 Cr 카바이드 분말을 제조하는 과정, 및상기 제조된 Cr 카바이드 분말과 Al 분말의 혼합분말을 900∼1400 ℃ 온도 구간에서 진공 분위기 하에서 15∼40 MPa 압력을 주면서 30분∼10시간 동안 가압소결하여 Cr2AlC 소결체를 제조하는 과정을 포함하여 이루어지는 Cr2AlC 소결체의 저가 제조방법.
- 제 1 항에 있어서,상기 Cr 카바이드는 Cr7C3 결정상 및 Cr3C2 결정상이 95 부피% 이상 포함되어 있으며, Cr 카바이드 내 Cr/C의 몰비가 1.95∼2.05 범위를 유지하는 Cr2AlC 소결체의 저가 제조방법.
- 제 1 항에 있어서,Cr2O3 분말과 탄소원 원료분말은 Cr2O3/C의 몰비가 0.23∼0.26 범위가 되도록 혼합하는 Cr2AlC 소결체의 저가 제조방법.
- 제 1 항에 있어서,상기 Cr 카바이드 분말과 Al 분말은 Cr 카바이드/Al의 몰비가 0.1∼1.3 범위가 되도록 혼합하는 Cr2AlC 소결체의 저가 제조방법.
- 제 1 항 내지 제 4 항 중에서 선택된 어느 한 항에 있어서,Cr2AlC 결정상이 95 부피% 이상 포함된 Cr2AlC 소결체의 저가 제조방법.
- 제 1 항 내지 제 4 항 중에서 선택된 어느 한 항에 있어서,Cr2AlC 기지상에 미반응 Cr 카바이드가 5 부피% 이하 포함된 Cr2AlC 소결체의 저가 제조방법.
- 제 6 항에 있어서,Cr2AlC 기지상에는 미반응 Cr 카바이드로서 Cr7C3 결정상, 또는 Cr7C3과 Cr3C2 결정상이 5 부피% 이하 포함된 Cr2AlC 소결체의 저가 제조방법.
- 제 1 항 내지 제 4 항 중에서 선택된 어느 한 항에 있어서,상대밀도가 95∼100% 이며, 초경(WC-Co)공구로 기계가공이 가능한 Cr2AlC 소결체의 저가 제조방법.
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KR1020070126962A KR100882923B1 (ko) | 2007-12-07 | 2007-12-07 | 기계가공성을 갖는 Cr₂AlC 소결체의 저가 제조방법 |
PCT/KR2008/007197 WO2009072832A2 (en) | 2007-12-07 | 2008-12-05 | Economical manufacturing method of cr2alc sintered material with excellent machinability |
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CN112605390B (zh) * | 2020-10-19 | 2022-08-26 | 西安斯瑞先进铜合金科技有限公司 | 一种利用铬粉制备高温合金用真空级低氮金属铬的制备方法 |
CN113957431B (zh) * | 2021-10-09 | 2024-04-26 | 广西壮族自治区特种设备检验研究院 | 一种等离子熔覆增材制造的max相陶瓷材料及其制备方法 |
CN115894034A (zh) * | 2022-12-08 | 2023-04-04 | 北京航空航天大学 | 铬碳化铝陶瓷的制备方法、铬碳化铝陶瓷和应用 |
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JPH03109253A (ja) * | 1989-09-19 | 1991-05-09 | Kawasaki Refract Co Ltd | カーボン含有不焼成れんがの製造方法 |
JPH03232765A (ja) * | 1990-02-09 | 1991-10-16 | Kurosaki Refract Co Ltd | 高耐食性アルミナカーボン質耐火物 |
KR100276109B1 (ko) | 1998-10-14 | 2000-12-15 | 원창환 | 자체 연소 반응법을 이용하여 탄화크롬-알루미나 복합분말을 제조하는 방법 |
WO2003000618A1 (en) | 2001-06-21 | 2003-01-03 | Sandvik Ab | A method of producing a metal-containing single-phase composition. |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH03109253A (ja) * | 1989-09-19 | 1991-05-09 | Kawasaki Refract Co Ltd | カーボン含有不焼成れんがの製造方法 |
JPH03232765A (ja) * | 1990-02-09 | 1991-10-16 | Kurosaki Refract Co Ltd | 高耐食性アルミナカーボン質耐火物 |
KR100276109B1 (ko) | 1998-10-14 | 2000-12-15 | 원창환 | 자체 연소 반응법을 이용하여 탄화크롬-알루미나 복합분말을 제조하는 방법 |
WO2003000618A1 (en) | 2001-06-21 | 2003-01-03 | Sandvik Ab | A method of producing a metal-containing single-phase composition. |
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